Solar plug connection

Abstract

A solar plug connection for photovoltaic systems, having a contact housing and a terminal housing. The terminal housing can be connected to the contact housing and is used to receive at least one solar cable which can be freely assembled and which includes a conductor. The contact housing is equipped with a contact pin for contacting the conductor of a cable to be connected. The contact housing is equipped with a thread that interacts with a thread provided on the terminal housing in order to introduce the contact pin into the conductor of the cable from the front in a defined manner when screwing together the contact housing and the terminal housing.

The invention claimed is: 
     
       1. A solar plug connection for photovoltaic installations comprising at least one contact housing and at least one connection housing,
 wherein the connection housing is connectable to the contact housing and serves for receiving at least one freely assemblable cable, 
 wherein a contact needle for making contact with the conductor of a cable to be connected is arranged on the contact housing, and in that a thread is arranged on the contact housing, said thread being provided for interacting with a thread provided on the connection housing, in order to introduce the contact needle into the conductor of the cable from a front in a defined manner when screwing together the contact housing and the connection housing; 
 wherein an anti-withdrawal securing means comprises a spring device having a plurality of spring tongues, wherein the rear ends of the spring tongues arranged closer to the rear end of the connection housing are situated radially further outward than the front ends of the spring tongues arranged further forward, and wherein the rear ends of the spring tongues are supported on the connection housing toward the rear. 
 
     
     
       2. The solar plug connection as claimed in  claim 1 , wherein the contact housing has a hollow-cylindrical receptacle region, in which the contact needle is arranged centrally, and/or wherein the connection housing has a hollow-cylindrical cable receptacle region, which is provided for receiving a cable having a centrally arranged conductor. 
     
     
       3. The solar plug connection as claimed in  claim 1 , wherein the contact housing has an internal thread, which interacts with an external thread of the connection housing. 
     
     
       4. The solar plug connection as claimed in  claim 1 , wherein the contact needle has a tip tapering toward the end. 
     
     
       5. The solar plug connection as claimed in  claim 1 , wherein the ratio of thread pitch per revolution to external diameter of the contact housing is less than 1:3 and in particular less than 1:5. 
     
     
       6. The solar plug connection as claimed in  claim 1 , wherein the anti-withdrawal securing means is a substantially elastic anti-withdrawal securing means that is provided on the connection housing and secures a cable that has been pushed into the connection housing from the rear end if from the front end pressure is exerted on a cable introduced therein. 
     
     
       7. The solar plug connection as claimed in  claim 1 , wherein the conductor of the cable consists of a plurality of flexible cores. 
     
     
       8. The solar plug connection as claimed in  claim 1 , wherein the anti-withdrawal securing means adjoins a sealing device, and wherein the spring tongues of the anti-withdrawal securing means are delimited by a conical stop surface on the sealing device. 
     
     
       9. The solar plug connection as claimed in  claim 1 , wherein the conductor is surrounded by an insulating layer, and wherein an external diameter of the cable is at least double the magnitude of an external diameter of the conductor. 
     
     
       10. The solar plug connection as claimed in  claim 1 , wherein the threads on the contact housing and the connection housing comprise at least four complete thread turns. 
     
     
       11. The solar plug connection as claimed in  claim 1 , wherein a cable is received at the connection housing, and wherein the connection housing is connected to the contact housing. 
     
     
       12. The solar plug connection as claimed in  claim 1 , wherein an external diameter of the contact housing and/or of the connection housing is less than four times the external diameter of the cable.